public class eg8_4 {
    public static void main(String[] args) {
        Integer iNums[] ={1,2,3,4,5,6};
        Calc<? extends Number   > c1 =null;
        c1 =new Calc<Integer>(iNums);
        System.out.println("整数组iNums的和值为："+c1.sum()+",平均值为："+c1.average());
        Double dNums[]={1.1,2.2,3.3,4.4};
        c1 =new Calc<Double>(dNums);
        System.out.println("整数组dNums的和值为："+c1.sum()+",平均值为："+c1.average());
    }
}
